Railway-car truck



H. E, vom. RAILWAY CAR' TRUCK.

APPLICATION FILED SEPT. 3, 1920.

Patented Sept. 13, 1921.v

j. my

HARRY E. DOERR,

OF ST. LOUIS, MISSOURI, ASSIGNOR TO SCULLIN STEEL CO., OF ST. LOUIS,MISSOURI, A CORPORATION OF MISSOURI.

RAILWAY-CAR TRUCK.

Specification of Letters Patent.

Patented sept. 1a, 1921.

Be it known that I, HARRY E. DOERR, a citizen of the United States,residing in the cit)T of St. Louis and State of Missouri,

have inventethcertain new and useful Improvements in Railway-Car Trucks,of which the following is a specification.

This invention relates to railway car trucks, and more particularly toside frames and journal boxes and an interitting connection of same.

One object of the invention is to provide a simple and improved journalbox which will function smoothly in a side frame to equalize thepressures on journal brasses.

Another object is to provide a simple and eflicient connection betweenthe side frame and journal box, especially where the tension member ofthe side frame has been straightened out to locate the intersection ofthe neutral axes of the tension and compression members outside thecenter of the journals.

These and other objects are accomplished by means of the arrangementdisclosed on the accompanying sheet of drawings, in which- Figure V1 isa fragmentary side elevation of a side frame and the associated journalbox shown in section embodying my invention;

Fig. 2 is a fragmentary top plan View of said side frame and journalbox;

gig. 3 is an end elevation of the same; an a Figs. 4 and 5 are end andside views, respectively, 'of a shim which may be inserted between theside frame and journal box.

The various novel features of my invention will be apparent from thefollowing description and drawings and will be particularly pointed outin the appended claims.

Referring to the figures of the drawings, it will be noted that I haveshown a truck side frame 10 preferably integral in form, in which theneutral axes of the tension and compression members 11 and 12, respecwtively, meet at a point N outside the center of the journal 13, the samebeing done by maintaining the web 14 of the tension member 11 straightthroughout its length up to the inner pedestal jaw 15, and then causingthe same to take the form of a curve over to the other coperatingpedestal ,j aw 16.

These depending pedestal jaws 15 and 16 preferably are formed integrallywith the truck side frame, the upper interior surface 16 ofthe sideframe between the jaws being curved longitudinally to receive a journalbox 17, the top or upper wall of which is curved or crownedtransverselywith respect to the box to conform to the curved portion 16 of the sideframe. The upper interior surface 18 of the journal box is varied i inshape from the standard to receive the standard Master Car BuildersAjournal brass 19, it being noted that no wedge is provided intermediatethe brass 19 and the upper interior surface of the journal box. The topof the journal box is also crowned longitudinally of the box, as shownparticularly in Fig.' 3, for the purpose of permitting aV rocking motionof the journal box transversely with respect to the side frame '10 forequalizing the pressures on the journal brasses. However, to permit suchtransverse rocking movement of the journal box, the pedestal guides 2()on the journal box are Sepa-rated an increased amount to provide aproper and increased clearance between said guides 2 0 and the pedestalj awsl and 16..

The pedestal jaws 15 and 16 each have spaced flanges 21 and 22 toprovide vertical pockets 23 for the reception of laterally ex-4 tendingears 24 on the journal box, said flanges 21 and 22 and the ears 24having registering openings 25 and 26, respectively, for the receptionof 'suitable fastening means, such as bolts 27, the openings 26 in theears 24 being elongated to permit both sides of the journal box to movevertically in a guided manner within the pedestal jaws to permit thereception of shims 28, which may be of various dimensions, between theltoruck side frame and the top of the journal 0X. Figs. 4 'and 5, isarcuate in shape to conform to the upper transversely curved or crownedsurface of the journal box and to the under curved surface 16' of thetruck side frame, said shimhaving upstanding shoulders'29 for embracingopposite vsides of the side frame.

By means of this arrangement a truck side frame and journal box and theinter.

The shim preferably, as shown inl and a journal box received betweensaid jaws having its top crowned transversely of the box to fit saidcurved surface and belng crowned longitudinally of the box to permitrocking of the latter for equalizing pressures on the journal brasses.

2. In a raih Yay car truck, the combination of a side frame havingpedestal jaws, the upper interior surface of the side frame between thejaws being curved longitudinally, and a. journal box received betweensaid jaws having its top crowned transversely of the box to tit saidcurved surface and 'being crowned longitudinally of the box topermitrocking of the latter for equalizing pressures on the journalbrasses, said journal box having pedestal4 guides spaced sufficientlyfrom said pedestal jaws to permit said rocking movement of the journalbox.

3.' ln a railway car truck, the combination of a side frame havingpedestal jaws, the upper interior surface of the side frame between thejaws being arcuate in shape to straighten out the tension member and forcausing the intersection of theneutral axes of the tension andcompression members to fall outside of the center of the journals, and ajournal box the top of which conforms to said arcuate portion of theside frame and 'which also is crowned longitudinally of the box forpermitting' a rocking action of the latter with respect to the sideframe.

4.- In a railway car truck, the combination of a side frame having.pedestal jaws, and a journal box received by said pedestal jaws andhaving a top crowned in a plurality of directions and coperating withthe side frame, the crowning in one direction permitting the journal boxto have a transverse rocking movement with respect to the side frame forequalizing pressures on the journal brasses. r

5. In a railway car truck, the combination of a side frame havingpedestal jaws, a journal box received by said pedestal, jaws and havinga top crowned in a plurality of directions and cooperating with the sideframe, the crowningl in one direction permitting the journal box to havea transversely rocking movement with respect'to the side frame forequalizing pressures on the journal brasses', and means whereby saidjournal box ma wuidedl move in a vertical direction within said truckside frame to permit the insertion ot' a shim between said truck sideframe and journal box.

Signed at St. Louis, Missouri, this th da)v of August, 1920.

HARK Y E. DOERR.

